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Understanding
9/11Maritime Morse Memories
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- Publication date
- 2009
- Usage
- Attribution-NonCommercial-NoDerivs 4.0 International
- Topics
- "500 kHz", 600m, wireless, wirelesstelegraphy, wt, sos, xxx, "radio officer", spark, wcc, wsl, wmh, woe, wpd, wnu, klc, gka, dan, ost, klc, wpa, kfs, kok, kph, klb, nmf, nmn, nma, nmg, nmc, noj, nrv, jcs, dan, sva
- Language
- English
- Item Size
- 1.1G
For almost one hundred years, mariners were protected by reliable wireless telegraphy, first the electric spark transmissions, later arc transmissions, and for the majority of the 20th century by the efficient mode of interrupted continuous wave.
Ships were equipped to use interrupted continuous wave (ICW) and interrupted modulated continuous wave (MCW) and later unmodulated continuous wave (CW or WT)). Radio Officers on ship and shore guarded 600 meters - later known as 500 kc/s and then 500 kHz for distress signals from ships and for messages from other ships and shore stations.
These recordings were made possible by Chas Henry, VA3CH, Richard Monjure, ex-N5JOB, Bruce Morris, GW4XXF, Shirl "Joe" Prewitt, W0TUT (SK), Bob McGraw, W2LYH (SK), Earl Korf, K2IC (SK), Finbar O'Connor, EI0CF, Terry George, G4AMT, Dick Dillman, W6AWO, Eric Simmons, KB6YNO, Sylvester Foeking, DH5PB, the Antique Wireless Association, and myself, David Ring, N1EA.
SURPRISE ADDITION!
I would never have expected that nearly 25 years after the close down of 500 kHz SOLAS SOS Distress system that I'd ever find another recording that I did not know about, but today, May 23, 2023, I found a recording of the close down of BERMUDA HARBOR RADIO / ZBM which was an excellent 100 watt station run by the Bermuda Harbormaster on 500 kHz and 476 kHz (working frequency) as well as 2182 kHz radiotelephone and VHF radiotelephone.
Here's that last message: [LINK]
ZBM ZBM = OUR WATCH ON 500 KHZ IS NOW ENDING AFTER ALMOST 100 YEARS AND INTO A NEW GENERATION OF DISTRESS ALERTING.
WE TAKE TIME TO REMEMBER THOSE MARINERS TECHNOLOGY COULD NOT SAVE.
TO OUR FRIENDS BEYOND THE ETHER WE WISH YOU FAIR WINDS AND FOLLOWING SEAS ALWAYS =
DE ZBM
GOOD BYE FM JOE
+ SK
A picture of that station is here.
We hope you enjoy listening to these recordings.
73
